Math Problem Statement

Complete the missing parts of the table for the following function: y = (1/2)^x. Given x = -2, -1, 0, 1, 2, and 3, fill in the corresponding y-values.

Solution

To complete the missing parts of the table for the given function y=(12)xy = \left(\frac{1}{2}\right)^x, let's calculate yy for the missing values of xx:

Function:

y=(12)xy = \left(\frac{1}{2}\right)^x


Step-by-Step Calculations:

  1. At x=2x = -2: y=(12)2=(21)2=22=4y = \left(\frac{1}{2}\right)^{-2} = \left(\frac{2}{1}\right)^2 = 2^2 = 4 So, y=4y = 4.

  2. At x=0x = 0: y=(12)0=1y = \left(\frac{1}{2}\right)^0 = 1 So, y=1y = 1.

  3. At x=3x = 3: y=(12)3=123=18y = \left(\frac{1}{2}\right)^3 = \frac{1}{2^3} = \frac{1}{8} So, y=18y = \frac{1}{8}.


Completed Table:

xx-2-10123
yy42112\frac{1}{2}14\frac{1}{4}18\frac{1}{8}

Final Answers:

  • At x=2x = -2, y=4y = 4
  • At x=0x = 0, y=1y = 1
  • At x=3x = 3, y=18y = \frac{1}{8}

Let me know if you'd like more explanations!


Related Questions:

  1. What happens to yy as xx \to \infty for this function?
  2. How does the graph of y=(12)xy = \left(\frac{1}{2}\right)^x look?
  3. What is the behavior of the function for negative values of xx?
  4. How does changing the base to 13\frac{1}{3} affect the table?
  5. What is the relationship between exponential growth and decay?

Tip:

For any axa^x where 0<a<10 < a < 1, the function represents exponential decay because the values of yy get smaller as xx increases.

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Math Problem Analysis

Mathematical Concepts

Exponential Functions
Powers of Fractions
Exponential Decay

Formulas

y = (1/2)^x
a^(-n) = 1 / a^n for negative exponents

Theorems

Properties of Exponents

Suitable Grade Level

Grades 8-10